Ran M Katzur

US Patent:

6839540, Jan 4, 2005

Filed:

Aug 15, 2000

Appl. No.:

09/639457

Inventors:

Ran Katzur - North Potomac MD, US

Assignee:

Hughes Electronics Corporation - El Segundo CA

International Classification:

H04B 7185

US Classification:

455 134, 4551275

Abstract:

A method and system which may achieve significantly higher power efficiency for multiple calls from multiple channels in satellite telephony systems. The method and system manipulate the transmission of all channels in a link, (i. e. , those channels that are silent as well as those channels that are active) in order to achieve the desired result. The method and system analyze the relationship between power savings for the satellite and system delay to achieve a desired power efficiency without degrading channel quality due to additional delay.

US Patent:

7630409, Dec 8, 2009

Filed:

Oct 21, 2002

Appl. No.:

10/277238

Inventors:

Nagendra Goel - McLean VA, US
Ran Katzur - N Potomac MD, US

Assignee:

LSI Corporation - Milpitas CA

International Classification:

H04J 3/06

US Classification:

370516, 370252

Abstract:

A method and apparatus which provides that, in a voice over network, incoming packets are analyzed and the appropriate moment to increase or decrease the nominal delay associated with a jitter buffer is determined. Hence, the nominal delay is adjusted at an appropriate moment based on network jitter characteristics. Preferably, the nominal delay is adjusted when voice activity is absent. The method and apparatus provide for improved play out of the jitter buffer, and provide improved performance.

US Patent:

7965797, Jun 21, 2011

Filed:

Feb 29, 2008

Appl. No.:

12/040533

Inventors:

Andres Kwasinski - Greenbelt MD, US
Ran Katzur - North Potomac MD, US
Vijay Sundararajan - Richardson TX, US
Brian Francis Johnson - Kensington MD, US

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H04L 27/06

US Classification:

375340, 375267, 375295, 375299, 375316, 455101, 455132, 455296, 455500, 370334, 370342

Abstract:

A method, system and apparatus for generating a constant amplitude zero autocorrelation (CAZAC) sequence to be transmitted on a wireless communication channel between a user equipment and a base station within a cellular communication network includes iteratively calculating elements of the CAZAC sequence according to a CAZAC sequence formula until a number of iterations has reached a predetermined iteration value determined in accordance with a number of subcarriers associated with the channel; obtaining a value of particular elements of the CAZAC sequence from a table of stored values at predetermined reset iteration values in order to limit error propagation; and generating the reference signal based upon the elements of the CAZAC sequence. The CAZAC sequence formula is one of a Chu sequence, Frank-Zadoff sequence, Zadoff-Chu (ZC) sequence, and Generalized Chirp-Like (GCL) Sequence.

US Patent:

8379728, Feb 19, 2013

Filed:

Mar 26, 2010

Appl. No.:

12/732554

Inventors:

Ran Katzur - North Potomac MD, US
David Quintin Bell - Frederick MD, US

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H04N 7/12

US Classification:

37524016

Abstract:

A method of determining an adaptive early skip indication (ESI) threshold during block motion compensation encoding of digital video data is disclosed. The method includes setting an ESI threshold minimum value below which no degradation in the block motion compensation encoding occurs; setting an ESI threshold maximum value above which degradation in the block motion compensation encoding is considered unacceptable; determining that a processor load state of the processor during block motion compensation encoding is one of an overloaded state, a normal loaded state, and an under loaded state; when the processor load state is determined to be in an overloaded state, increasing the adaptive ESI threshold to a value below the ESI threshold maximum value thereby decreasing a number of macroblocks in the digital video data that are block motion compensation encoded; when the processor load state is determined to be in a normal loaded state, maintaining the adaptive ESI threshold at its current value; and when the processor load state is determined to be in an under loaded state, decreasing the adaptive ESI threshold to a value above the ESI threshold minimum value thereby increasing a number of macroblocks in the digital video data that are block motion compensation encoded. A block motion compensation encoding devices is also disclosed that implements the method above. A computer readable medium is also disclosed that stores instructions, which when executed by a processing unit, performs the method above.

US Patent:

8644389, Feb 4, 2014

Filed:

Mar 23, 2010

Appl. No.:

12/729499

Inventors:

Vivekanand Chengalvala - Montgomery Village MD, US
Ran Katzur - Germantown MD, US
Djordje Senicic - Belgrade, RS

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H04B 1/66
H04N 7/12
H04N 11/02
H04N 11/04
H04N 7/26

US Classification:

37524016

Abstract:

A video processing device includes a video preprocessor and a video processor. The video processor is configured to facilitate inputting preprocessed digital video data ready for further processing by an encoder or a transcoder, compressing the preprocessed digital video data to form compressed digital video data, and outputting the compressed digital video data. The video preprocessor operable to receive digital video raw data, configured to facilitate preprocessing a macroblock of the digital video raw data so as to output the preprocessed digital video data ready for an encoder or transcoder of the video processor when the macroblock does not indicate SKIP, and not preprocessing the macroblock of the digital video raw data when the macroblock is a SKIP macroblock indicating SKIP, but jumping to process the SKIP macroblock by an entropy encoder of the video processor instead.

US Patent:

20120236940, Sep 20, 2012

Filed:

Mar 16, 2011

Appl. No.:

13/049298

Inventors:

Ran Katzur - Potomac MD, US
David Bell - Frederick MD, US

Assignee:

TEXAS INSTRUMENTS INCORPORATED - Dallas TX

International Classification:

H04N 7/32

US Classification:

37524016, 375E07123

Abstract:

Embodiments of the invention include a parallel method for real-time video encoding in a multicore processor system. A first frame of video data is divided into groups. Each group has one or more rows of a plurality of macroblocks. Motion estimation is performed on a second group following a first group by a first core of said multicore system. While said motion estimation is being performed by said first core, compression-and-reconstruction is performed on said first group by a second core.

US Patent:

62403036, May 29, 2001

Filed:

Apr 23, 1998

Appl. No.:

9/064897

Inventors:

Ran Katzur - North Potomac MD

Assignee:

Motorola Inc. - Schaumburg IL

International Classification:

H04M 166

US Classification:

455563

Abstract:

A voice recognition system having an enhanced button that allows a driver to reduce his risk of being involved in an accident while operating a vehicle and using a mobile telephone. The present invention is a mobile telephone having a voice recognition system which receives and acts on voice commands. Once the voice recognition system is activated, the mobile telephone can be operated in a hands free mode. The voice recognition system is used to automatically perform the same functions as a keypad. Since a driver can use just the voice recognition system, a keypad is no longer necessary. A mobile telephone equipped with a voice recognition system of the present invention requires only two buttons, a power button and a voice recognition button. To provide further safety, the voice recognition button is implemented to distinguish the voice recognition button from the other buttons to provide easier activation of the voice recognition system. The present invention can also be applied to other types of telephones and can be especially useful to a vision impaired person.

US Patent:

20060088117, Apr 27, 2006

Filed:

Oct 26, 2004

Appl. No.:

10/973585

Inventors:

Ran Katzur - N. Potomac MD, US

International Classification:

H04L 5/12

US Classification:

375261000

Abstract:

A method for correcting signals received on a channel. Signals are received along the channel and it is determined how many of the signals are outside a predetermined range relative to a plurality of predetermined constellation points (i.e., erasures). Then, the noise power is estimated the noise power based on the number erasures, and the noise power is used to correct the signals. Specifically, the estimated noise power can be used to correct the signals which have been determined to be outside the predetermined range and which have been determined to contain a large error component (i.e., based on distance from the closest constellation point). A look up table can be used to determine the correction to be applied, and a separate look up table can be used for each tone.